QBY Air-Operated Diaphragm Pump (AODD)QBYS Stainless Steel Pneumatic Diaphragm Pump
The QBYS is the stainless-steel version of the QBY pneumatic diaphragm pump — SS304/SS316 for corrosive, food and hygienic fluids. Full size range, in stock.

Model: QBY-65
Why This Pump Gets NoticedThe QBY-65 sits between the mid-range and heavy-duty models. With a 65 mm port, it moves up to 16 m³/h and passes solids up to 8 mm. It’s a solid choice for factories that ne…
| Flow Rate | 0-30m³/h |
|---|---|
| Head | 0 – 50 / 70m |
| Inlet / Outlet Diameter | 10 – 100mm |
| Material | PP Engineering Plastic, Aluminum Alloy, Cast Iron, Stainless Steel |
Why This Pump Gets Noticed
The QBY-65 sits between the mid-range and heavy-duty models. With a 65 mm port, it moves up to 16 m³/h and passes solids up to 8 mm. It’s a solid choice for factories that need reliable transfer without going to the largest frame size.
Build Options
You can choose from aluminum, stainless steel, cast iron, or reinforced polypropylene. Each material targets different fluids — stainless for acids, cast iron for abrasives, polypropylene for general chemical duty.
Quick Reference Table
| Parameter | Value |
|---|---|
| Model | QBY-65 |
| Port Size | 65 mm (2.5″) |
| Max Flow | 16 m³/h |
| Max Head | 60 m |
| Max Pressure | 6 kgf/cm² |
| Suction Lift | 7 m |
| Solids Passage | 8 mm |
| Air Consumption | 0.9 m³/min |

Where It Does the Job
Paper mills pumping fiber slurries, chemical plants moving intermediate products, food factories handling thick pastes, mining operations transferring tailings.
Simple Maintenance Advice
Flush the pump with clean water after pumping sticky materials. Check diaphragms every 500 hours. Replace ball valves if you see uneven wear.
Applications Summary:
paper mill slurry, chemical intermediates, food paste transfer, mining tailings, industrial wastewater, pigment handling
Thanks for visiting HAQUANPUMP. We supply QBY diaphragm pumps for industrial applications worldwide. Reach out for a quote or technical discussion — we’re here to help.
QBY Air-Operated Diaphragm Pump (AODD)The QBYS is the stainless-steel version of the QBY pneumatic diaphragm pump — SS304/SS316 for corrosive, food and hygienic fluids. Full size range, in stock.
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